Improvement in apparatus for drying paper



Patented May 3, 1876.

jwm fewbov firm/W651 H. BRAUNHOLD.

APPARATUS FORDRYING PAPER. No. 177,196.

\I "4w, m m

Q I J L1 IIIY.

N. PETERS, PNOTD'LITHOGRAPHER, WASHINGTON, Dv-C.

FATE-NT V HENRYBRAUNHOLD, OF NEW YORK, Y.

IMPROVEMENT .IN'AP'PARATUS'FOR DRYING PAPER.

Specification forming part ofLetters PatentNo. 77,196, dated May 9,1876; application filed April 6, 1876.

To an whom it may concern:

" Be it known that I,:HENR Y BRAUNHOLD,

nave invented a new and Improved Apparatus for Drying Paper-andothermaterials,

which improvement is fully set forth in the following specification,referencebeing had to the accompanying drawing, in which- Figure Irepresents a longitudinal section of my apparatus. Fig. 2 is a plan viewthereof.

Similar letters indicate corresponding parts.

My improved apparatus is especially adapted to drying stained or fancypaper, but is applicable, also, todrying muslin and various othermaterials of a similar nature. It consists in combining, with theforaminous drum and its internal revolving fan, a fan-blower or otherair-forcing device, which is so arranged with relation to the drum thata current of air can thereby be directed over the circumference of thedrum, so as to drive off the vapors rising from the paper orothermaterial in the process of drying, while such fanblower alsoassists in drying. It consists, also, in combining, with the foraminousdrum and its concomitant parts, a heating-cylinder, which is so arrangedas to receive the paper or other material after it has passed over theforaminous drum, its effect being to thoroughly remove all moisture thatmay remain in the paper after its passage over the drum. With theheatingcylinder is also combined a fanblower, for the purpose of drivingoft vapors and to assist in drying.

In the drawing, the letter A designates the frame of my apparatus,forming the bearing, among others, for a shaft, B, on which is mounted aforaminous drum, 0. I prefer to make the circumference of this drum ofwiregauze. The drum is mounted loosely on the shaft B, while to theshaft are secured the blades of a fan, D, the fan being secured to thatpart of the shaft situated internally of the drum. The-foraminous drum 0and the fan D are thus rendered susceptible of being revolved inopposite directions. For the purpose of imparting a revolving motion tothe foraminous drum, I have used, in this example, a worm, E, whichengages a worm-wheel, F, secured to the drum. The fan D may. be revolvedin like manner to the drum, or in any other suitablemanner. Beneath thefo-' raminous drum 0 is situated a fan-blower, G, which is arranged todirect a current of air over the circumference of the drum. This currentof air is spread over a large part of the drum, or made to pass round itby the actlon of a deflector, H, which is bent over and parallel to thedrum, or nearlyso, and secured to the frame A, as clearlyshown.- Nextthe foraminous drum 0 is placed a heating-cylinder, I, which is mountedon hollowgudgeons having their bearings in the frame A, andto one ofwhich; gudgeonsis connected a pipe, J, by whichvsteam or hot air may beadmitted to the cylinder for the purpose of heating it. Beheath thisheating-cylinder I-is placed a fanblower,K, similar to the blower G,such blower K being arranged to blow round the circumference of theheating-cylinder, which, to this end, is provided with a deflector, Q. Arevolving motion may be imparted to the heating-cylinder I in likemanner to the foraminous drum by a worm and worm-wheel, as indicated inthe drawing.

In some cases I arrange a system of heating-pipe's, O, on the floor ofmy apparatus, between the heating-cylinder I and the foraminous drum 0,for the purpose of preparing the paper or other material fortheheating-cy linder.

In the present example of my invention I have duplicated the foraminousdrum 0 and its concomitant parts, as shown, 0 designating the secondarydrum; D, its internal revolving fan; G, the secondary fan-blower; and H,the deflector, by which the current of air produced by this blower G isspread over the surface of the secondary drum. The heating-cylinder I isthus situated between two drums, by which the paper or other material tobe dried is cooled both before and after it passes over theheating-cylinder.

The operation of my machine is as follows: The strip of paper or othermaterial is first conducted round the fora-minous drum G;

used,) round which it is passed to a guide roller, d, whence it is drawnon a windingroller, 0. v

I prefer to use two winding-rollers, as shown, f being the secondarywinding-roller, so that when one of these rollers has received theproper length of paper the latter may be cut and allowed to wind on theother roller. A

revolving motion may be imparted to either of the winding-rollers e f bymeans of a fric same is brought in frictional contact with a pulley, i,securedto the respective windingrollers, the latter are revolved.

It may be remarked that, instead of the several air forcing devicesherein described, air-.

pumps of suitable construction may be employed.

With the machine, which I have in this example represented, is combineda carrier, P, in the form of an endless apron, for the purpose offeeding the paper or other material to the foraminousdrum C, the objectof thislcarrierbeing to prevent sagging of 1 that portion of thematerial between the i'oranlinous drum and the place from whence thematerial is taken,

What I claim as new, and desire to secure by Letters Patent, is-- 1. Thecombination, with the foraminous drum and its internal revolvingpfan, ofan airforcing device, arranged in relation to the drum, for driving acurrent of airover the circumference of the drum, for driving off thevapors arising from the materialbeing dried, substantially as set forth.

2. The heating-cylinder I, combinedwith the foraminous drum 0 and itsinternal revolving f'a'u, substantially as described, and for the objectspecified.

3. The combination of a fan-blower, K, with the heatingcylinder I, theforaminous drum 0 audits internal revolvingfan,substantially asdescribed.

In testimony that I claim theforegoing I have hereunto set my hand andseal this 27th day of March, 1876.

H. BRAUNHOLD. [L. SQ]

